/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.explorer.ui.form;

import com.vaadin.ui.Field;
import com.vaadin.ui.TextField;
import org.activiti.engine.form.FormProperty;
import org.activiti.engine.impl.form.LongFormType;
import org.activiti.explorer.Messages;
import org.activiti.explorer.ui.validator.LongValidator;

/**
 * @author Frederik Heremans
 */
public class LongFormPropertyRenderer extends AbstractFormPropertyRenderer {

    public LongFormPropertyRenderer() {
        super(LongFormType.class);
    }

    @Override
    public Field getPropertyField(FormProperty formProperty) {
        final TextField textField = new TextField(getPropertyLabel(formProperty));
        textField.setRequired(formProperty.isRequired());
        textField.setEnabled(formProperty.isWritable());
        textField.setRequiredError(getMessage(Messages.FORM_FIELD_REQUIRED, getPropertyLabel(formProperty)));

        if (formProperty.getValue() != null) {
            textField.setValue(formProperty.getValue());
        }

        // Add validation of numeric value
        textField.addValidator(new LongValidator("Value must be a long"));
        textField.setImmediate(true);

        return textField;
    }

    protected boolean isLong(String value) {
        try {
            Long.parseLong(value);
            return true;
        } catch (NumberFormatException nfe) {
            return false;
        }
    }

}
